The Spring,helical,extension, cataloged under National Stock Number 5360-01-669-2137, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Us Jack Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-01-669-2137 |
| Primary Part Number | 56145 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Us Jack Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 56145 PRIMARY | Us Jack Co (USA) |
NSN 5360-01-669-2137 is a Spring,helical,extension, manufactured by Us Jack Co, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-01-669-2137 has 1 manufacturer part number on file: 56145 (Us Jack Co).
Key specifications for 56145: Special Features: MATERIAL: MUSIC WIRE AM-C1085-SW; NO. OF COILS FULL: 17; NO. OF COILS DOWN SIZED: 4; Part Name Assigned by Controlling Agency: EXTENSION SPRING; End Item Identification: 5120-01-052-5642. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.